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WordPress 网站获取当前分类文章所有标签的方法。如果需要在分类列表页面，显示当前分类文章中添加的所有标签，方便读者阅读自己喜欢的内容，下面的代码可以帮你实现这个功能。
1、获取WordPress当前分类文章所有标签，首先，在主题functions.php模板文件中添加以下函数：
- function get_category_tags($args) { global $wpdb; $tags = $wpdb->get_results (" SELECT DISTINCT terms2.term_id as tag_id， terms2.name as tag_name FROM $wpdb->posts as p1 LEFT JOIN $wpdb->term_relationships as r1 ON p1.ID = r1.object_ID LEFT JOIN $wpdb->term_taxonomy as t1 ON r1.term_taxonomy_id = t1.term_taxonomy_id LEFT JOIN $wpdb->terms as terms1 ON t1.term_id = terms1.term_id， $wpdb->posts as p2 LEFT JOIN $wpdb->term_relationships as r2 ON p2.ID = r2.object_ID LEFT JOIN $wpdb->term_taxonomy as t2 ON r2.term_taxonomy_id = t2.term_taxonomy_id LEFT JOIN $wpdb->terms as terms2 ON t2.term_id = terms2.term_id WHERE t1.taxonomy = 'category' AND p1.post_status = 'publish' AND terms1.term_id IN (".$args['categories'].") AND t2.taxonomy = 'post_tag' AND p2.post_status = 'publish' AND p1.ID = p2.ID ORDER by tag_name "); $count = 0; if($tags) { foreach ($tags as $tag) { $mytag[$count] = get_term_by('id'， $tag->tag_id， 'post_tag'); $count++; } } else { $mytag = NULL; } return $mytag;}
2、其次，将下面调用输出代码，添加到主题archive.php模板适当位置：
- <?php $cat= single_cat_title(''， false); $args = array( 'categories' => get_cat_ID($cat)); $tags = get_category_tags($args); $content .= "<ul class='cat-tag'>"; if(!emptyempty($tags)) { foreach ($tags as $tag) { $content .= "<li><a href="".get_tag_link($tag->term_id)."">".$tag->name."</a></li>"; } } $content .= "</ul>"; echo $content;?>
3、个人感觉放到头部调用函数：
- <?php get_header(); ?>
4、下面比较合适。最后，再适当加上样式即可。
- .cat-tag{ float: left; width: 100%;}.cat-tag li a{ float: left; margin: 0 5px;}
